You can use the SED linux command to search and replace a string within all files inside a directory:
This example replaces all occurrences of fast with slow in file names that end in .htm:
$ find ./* -name ‘*.htm*’ -type f -exec sed -i ‘s/fast/slow/g’ {} \;
(5) 2N1304 NOS Vintage Texas Inst Germanium Transistor -USA Seller (Free Ship)
$24.99
200pcs NPN / PNP 10 Value Precision Transistor Assortment Kit
$9.75
+ 100pcs Vintage Germanium transistor USSR P-N-P MP41 (МП41) ~ AC540
$19.90
20, 50, or 100pcs 2n2222A General Purpose NPN Transistor TO-92 USA SOLD/SHIP
$4.65
2N2222A 2N2222 (10 pcs) TO-92 NPN Transistor - Free & Fast shipping
$2.75
100pcs 2n3904 General Purpose NPN Transistor TO-92 SOLD/SHIP USA
$5.99
TO-92 NPN PNP Transistors Assortment Kit 15 Values X 40pcs=600pcs With Storage
$11.99
10PCS MJ15003G Complementary Silicon Power Transistors 250 W TO-3 New Original
$5.00
2N6287 Original Pulled ST Transistor 100V 10A 160W PNP TO-3
$10.95
50~100Pcs 2N5401 2N5551 2N3904 2N3906 2A2222A 2A2907 Transistor Triode TO-92
$3.19