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added new one-liners, minor updates

- signed-off-by: trimstray <trimstray@gmail.com>
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trimstray 4 年前
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@@ -267,6 +267,7 @@ performance of any of your sites from across the globe.<br>
* [fuser](#tool-fuser)
* [ps](#tool-ps)
* [top](#tool-top)
* [kill](#tool-kill)
* [find](#tool-find)
* [diff](#tool-diff)
* [tail](#tool-tail)
@@ -281,6 +282,7 @@ performance of any of your sites from across the globe.<br>
* [openssl](#tool-openssl)
* [gnutls](#tool-gnutls)
* [secure-delete](#tool-secure-delete)
* [dd](#tool-dd)
- **[HTTP/HTTPS](#http-https)**
* [curl](#tool-curl)
* [httpie](#tool-httpie)
@@ -407,6 +409,16 @@ trap _after_logout EXIT
__EOF__
```

###### Generate a sequence of numbers

```bash
for ((i=1; i<=10; i+=2)) ; do echo $i ; done
# alternative: seq 1 2 10

for ((i=5; i<=10; ++i)) ; do printf '%02d\n' $i ; done
# alternative: seq -w 5 10
```

___

##### Tool: [mount](https://en.wikipedia.org/wiki/Mount_(Unix))
@@ -506,6 +518,18 @@ find . \!-user <username> -print
find . -type f -mtime +60 -delete
```

###### Recursively remove all empty sub-directories from a directory

```bash
find . -depth -type d -empty -exec rmdir {} \;
```

###### How to find all hard links to a file

```bash
find </path/to/dir> -xdev -samefile filename
```

___

##### Tool: [top](https://en.wikipedia.org/wiki/Top_(software))
@@ -520,6 +544,16 @@ top -p $(pgrep -d , <str>)

___

##### Tool: [kill](https://en.wikipedia.org/wiki/Kill_(command))

###### Kill a process running on port

```bash
kill -9 $(lsof -i :<port> | awk '{l=$2} END {print l}')
```

___

##### Tool: [diff](https://en.wikipedia.org/wiki/Diff)

###### Compare two directory trees
@@ -855,6 +889,17 @@ sdmem -v
swapoff /dev/sda5 && sswap -vz /dev/sda5
```

___

##### Tool: [dd](https://en.wikipedia.org/wiki/Dd_(Unix))

###### Show dd status every so often

```bash
dd <dd_params> status=progress
watch --interval 5 killall -USR1 dd
```

<a name="http-https"><b>HTTP/HTTPS</b></a>

##### Tool: [curl](https://curl.haxx.se)
@@ -959,6 +1004,22 @@ ssh -o PreferredAuthentications=password -o PubkeyAuthentication=no user@remote_
ssh -o PreferredAuthentications=publickey -o PubkeyAuthentication=yes -i id_rsa user@remote_host
```

###### Simple recording SSH session

```bash
function _ssh_sesslog() {

_sesdir="<path/to/session/logs>"

mkdir -p "${_sesdir}" && \
ssh $@ 2>&1 | tee -a "${_sesdir}/$(date +%Y%m%d).log"

}

# Alias:
alias ssh='_ssh_sesslog'
```

___

##### Tool: [linux-dev](https://www.tldp.org/LDP/abs/html/devref1.html)
@@ -1326,6 +1387,15 @@ lsof -c "process"
```bash
lsof -u username -a +D /etc
```

###### Show 10 Largest Open Files

```bash
lsof / \
| awk '{ if($7 > 1048576) print $7/1048576 "MB" " " $9 " " $1 }' \
| sort -n -u | tail | column -t
```

___

##### Tool: [netstat](https://en.wikipedia.org/wiki/Netstat)
@@ -1440,6 +1510,7 @@ sed -n 10p /path/to/file

```bash
sed -i 10d /path/to/file
# alternative (BSD): sed -i'' 10d /path/to/file
```

###### Remove a range of lines from a file
@@ -1455,6 +1526,7 @@ ___
###### Search for a "pattern" inside all files in the current directory

```bash
grep -rn "pattern"
grep -RnisI "pattern" *
fgrep "pattern" * -R
```


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